Columbia University
Component 4/Unit 3
Self-Assessment
1. The main function of a computer is to ____.
a. execute instructions
b.answer human questions
c.service the CPU
d.create input signals
2. The motherboard is made up of circuitry and thousands of copper wires known as ____.
a.binary code
b.RAM
c.buses
d.chips
3. The motherboard contains ____ slots, into which device expansion cards are inserted.
a.RAM
b.SATA
c.AGP
d.PCI
4. Today’s computers connect the mouse and keyboard via a(n) ____ slot.
a.USB
b.IDE
c.SATA
d.PS/2
5. The ____ monitor port replaces the VGA port in today’s computer systems.
a.HDMI
b.DVI
c.AGP
d.PS/2
6. A(n) ____ jack is used to connect a network cable to a network interface card.
a.RJ-11
b.802.11N
c.RJ-45
d.Either A or C
7. A serial port, also known as a ____ port, can be used to connect to and manage a network device.
a.DB-25
b.parallel
c.USB to serial
d.DB-9
8. Hard disk storage is known as ____ storage.
a.secondary
b.volatile
c.RAM
d.primary
9. RAM is installed ____.
a.on the motherboard
b.in PCI slots
c.within the CPU
d.in SATA slots
10. The operating system is stored ____.
a.in RAM when the computer is running
b.on the hard disk
c.Either A or B
d.None of the above
11. What is a CT scan?
a.A nuclear medicine imaging device that produces a 3-D image.
b.A device that creates an image based on sound waves.
c.An x-ray, using specialized equipment, that takes cross-sectional pictures of the body.
d.Magnetic imaging equipment that uses a radio frequency pulse to create an image.
12. What is a PET scan?
a.A nuclear medicine imaging device that produces a 3-D image.
b.A device that creates an image based on sound waves.
c.An x-ray, using specialized equipment, that takes cross-sectional pictures of the body.
d.Magnetic imaging equipment that uses a radio frequency pulse to create an image.
13. What is an MRI?
a.A nuclear medicine imaging device that produces a 3-D image.
b.A device that creates an image based on sound waves.
c.An x-ray, using specialized equipment, that takes cross-sectional pictures of the body.
d.Magnetic imaging equipment that uses a radio frequency pulse to create an image.
14. A binary digit value of one (1) indicates that electricity is ____.
a.stored in RAM
b.on
c.off
d.in a Boolean circuit
15. In the binary number “01011010”, the rightmost value of “0” is a placeholder for ____.
a.20
b.21
c.22
d.27
16. 1024 bytes x 1024 x 1024 = ____.
a.1 KB
b.1 GB
c.1 TB
d.1,024 KB
17. Microsoft Word, running on a computer, is an example of a(n) ____.
a.process
b.service
c.thread
d.event
18. How does data differ from information?
a.Data has limited meaning, depending its storage location.
rmation is the same as data.
c.Data has no meaning on its own merit.
d.None of the above.
19. Roughly how much storage does a chest x-ray require?
a.35 megabits
b.20 megabits
c.30 megabytes
d.20 megabytes
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